Audacity exported WAV file, RIFF format issue

[dmillar01]

I exported a WAV file (44100 samples/sec, 2 Bytes/sample, 1 channel, 1226752 samples) from Audacity. I have written software that reads WAV files and it gave me a warning that there are 180 unused bytes at the end of this file. The file contains a RIFF header, one fmt chunk, one data chunk, and 180 unused bytes. The unused Bytes do not appear to be chunks. The RIFF header indicates a file size that includes the unused bytes. The DOS file size agrees with the RIFF header. This is probably not a big issue, but I just spent hours looking for any bugs in my software. Does anyone know if these extra, unused Bytes violate the WAV standard? Wikipedia says the WAV standard is a bit fuzzy.

[kozikowski]

Scientists and detail oriented people are frequently disappointed with Audacity. Audacity is not a WAV editor. It's a production editor and sometimes technical accuracy takes a back seat to making the show sound good.

Koz

[Gale Andrews]

I exported a WAV file (44100 samples/sec, 2 Bytes/sample, 1 channel, 1226752 samples) from Audacity.

You're saying that. Audacity calls 2 Bytes/sample "16-bit".

Which version of Audacity are you using? Exactly what choices did you use when you exported?

I have written software that reads WAV files and it gave me a warning that there are 180 unused bytes at the end of this file. The file contains a RIFF header, one fmt chunk, one data chunk, and 180 unused bytes. The unused Bytes do not appear to be chunks. The RIFF header indicates a file size that includes the unused bytes. The DOS file size agrees with the RIFF header. This is probably not a big issue, but I just spent hours looking for any bugs in my software. Does anyone know if these extra, unused Bytes violate the WAV standard? Wikipedia says the WAV standard is a bit fuzzy.

I don't know much about this but did you export metadata with the file? What happens if you download sample WAV files from the internet and look at those in your app?


Gale